We vaccinate children against a handful of illnesses at an early age, but now evidence shows that these vaccines seem to wear off after a number of years. If you want to avoid something awful like whooping cough, you should speak with your doctor about getting vaccinated again.

How long does the whooping cough vaccination last? One study shows you get about three years, and other sources expect a little more. Vaccines are supposed to create antibodies that last a lifetime, so this evidence may seem strange. Consider, however, that flu vaccines are offered yearly because the virus changes. Whether that's the case with whooping cough or any other illnesses is still unknown, but if you want to protect yourself further you should ask your doctor about getting vaccinated again.